ABAP Select data from SAP table EHFNDS_CHM_SEARCH_CRITERIA into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP EHFNDS_CHM_SEARCH_CRITERIA table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to EHFNDS_CHM_SEARCH_CRITERIA. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the EHFNDS_CHM_SEARCH_CRITERIA table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_EHFNDS_CHM_SEARCH_CRITERIA TYPE STANDARD TABLE OF EHFNDS_CHM_SEARCH_CRITERIA,
      WA_EHFNDS_CHM_SEARCH_CRITERIA TYPE EHFNDS_CHM_SEARCH_CRITERIA,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <EHFNDS_CHM_SEARCH_CRITERIA> TYPE EHFNDS_CHM_SEARCH_CRITERIA.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_EHFNDS_CHM_SEARCH_CRITERIA.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM EHFNDS_CHM_SEARCH_CRITERIA
  INTO TABLE IT_EHFNDS_CHM_SEARCH_CRITERIA.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EHFNDS_CHM_SEARCH_CRITERIA
*  INTO TABLE @DATA(IT_EHFNDS_CHM_SEARCH_CRITERIA2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_EHFNDS_CHM_SEARCH_CRITERIA INDEX 1 INTO DATA(WA_EHFNDS_CHM_SEARCH_CRITERIA2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_EHFNDS_CHM_SEARCH_CRITERIA ASSIGNING <EHFNDS_CHM_SEARCH_CRITERIA>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EHFNDS_CHM_SEARCH_CRITERIA>-KEY = 1.
<EHFNDS_CHM_SEARCH_CRITERIA>-NAME = 1.
<EHFNDS_CHM_SEARCH_CRITERIA>-TRADE_NAME = 1.
<EHFNDS_CHM_SEARCH_CRITERIA>-COMPANY_INT_NAME = 1.
<EHFNDS_CHM_SEARCH_CRITERIA>-VENDOR_KEY_REF = 1.

ENDLOOP.

LOOP AT IT_EHFNDS_CHM_SEARCH_CRITERIA INTO WA_EHFNDS_CHM_SEARCH_CRITERIA.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EHFNDS_CHM_SEARCH_CRITERIA-STATUS_REV, sy-vline,
  WA_EHFNDS_CHM_SEARCH_CRITERIA-IS_SDS_RECORD, sy-vline,
  WA_EHFNDS_CHM_SEARCH_CRITERIA-CHM_NATURE, sy-vline,
  WA_EHFNDS_CHM_SEARCH_CRITERIA-HAZ_INGR_KEY_REF, sy-vline,
  WA_EHFNDS_CHM_SEARCH_CRITERIA-MATERIAL_ID, sy-vline,
  WA_EHFNDS_CHM_SEARCH_CRITERIA-METH_USE_CODE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EHFNDS_CHM_SEARCH_CRITERIA you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_EHFNDS_CHM_SEARCH_CRITERIA TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_EHFNDS_CHM_SEARCH_CRITERIA INTO WA_EHFNDS_CHM_SEARCH_CRITERIA.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit EHVND, internal->external for field VENDOR_KEY_REF
CALL FUNCTION 'CONVERSION_EXIT_EHVND_OUTPUT'
  EXPORTING
    input =                      WA_EHFNDS_CHM_SEARCH_CRITERIA-VENDOR_KEY_REF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHFNDS_CHM_SEARCH_CRITERIA-VENDOR_KEY_REF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit DFVAL, internal->external for field STATUS_REV
CALL FUNCTION 'CONVERSION_EXIT_DFVAL_OUTPUT'
  EXPORTING
    input =                      WA_EHFNDS_CHM_SEARCH_CRITERIA-STATUS_REV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHFNDS_CHM_SEARCH_CRITERIA-STATUS_REV.
WRITE:/ 'New Value:', ld_input.

*Conversion exit DFVAL, internal->external for field CHM_NATURE
CALL FUNCTION 'CONVERSION_EXIT_DFVAL_OUTPUT'
  EXPORTING
    input =                      WA_EHFNDS_CHM_SEARCH_CRITERIA-CHM_NATURE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHFNDS_CHM_SEARCH_CRITERIA-CHM_NATURE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit LSRID, internal->external for field HAZ_INGR_KEY_REF
CALL FUNCTION 'CONVERSION_EXIT_LSRID_OUTPUT'
  EXPORTING
    input =                      WA_EHFNDS_CHM_SEARCH_CRITERIA-HAZ_INGR_KEY_REF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHFNDS_CHM_SEARCH_CRITERIA-HAZ_INGR_KEY_REF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATERIAL_ID
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_EHFNDS_CHM_SEARCH_CRITERIA-MATERIAL_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHFNDS_CHM_SEARCH_CRITERIA-MATERIAL_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EHMET, internal->external for field METH_USE_CODE
CALL FUNCTION 'CONVERSION_EXIT_EHMET_OUTPUT'
  EXPORTING
    input =                      WA_EHFNDS_CHM_SEARCH_CRITERIA-METH_USE_CODE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHFNDS_CHM_SEARCH_CRITERIA-METH_USE_CODE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit LCRID, internal->external for field APPR_LOC_KEY_REF
CALL FUNCTION 'CONVERSION_EXIT_LCRID_OUTPUT'
  EXPORTING
    input =                      WA_EHFNDS_CHM_SEARCH_CRITERIA-APPR_LOC_KEY_REF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHFNDS_CHM_SEARCH_CRITERIA-APPR_LOC_KEY_REF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EHPUR, internal->external for field PURPOSE_CODE
CALL FUNCTION 'CONVERSION_EXIT_EHPUR_OUTPUT'
  EXPORTING
    input =                      WA_EHFNDS_CHM_SEARCH_CRITERIA-PURPOSE_CODE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHFNDS_CHM_SEARCH_CRITERIA-PURPOSE_CODE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EHFNDS_CHM_SEARCH_CRITERIA-ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHFNDS_CHM_SEARCH_CRITERIA-ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EHCLS, internal->external for field CLASSIFICATION_GHS
CALL FUNCTION 'CONVERSION_EXIT_EHCLS_OUTPUT'
  EXPORTING
    input =                      WA_EHFNDS_CHM_SEARCH_CRITERIA-CLASSIFICATION_GHS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHFNDS_CHM_SEARCH_CRITERIA-CLASSIFICATION_GHS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EHEHC, internal->external for field CLASSIFICATION_EU
CALL FUNCTION 'CONVERSION_EXIT_EHEHC_OUTPUT'
  EXPORTING
    input =                      WA_EHFNDS_CHM_SEARCH_CRITERIA-CLASSIFICATION_EU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHFNDS_CHM_SEARCH_CRITERIA-CLASSIFICATION_EU.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_EHFNDS_CHM_SEARCH_CRITERIA_STR, 
KEY TYPE STRING,
NAME TYPE STRING,
TRADE_NAME TYPE STRING,
COMPANY_INT_NAME TYPE STRING,
VENDOR_KEY_REF TYPE STRING,
STATUS_REV TYPE STRING,
IS_SDS_RECORD TYPE STRING,
CHM_NATURE TYPE STRING,
HAZ_INGR_KEY_REF TYPE STRING,
MATERIAL_ID TYPE STRING,
METH_USE_CODE TYPE STRING,
APPR_LOC_KEY_REF TYPE STRING,
CHEMICAL_ROLE TYPE STRING,
PURPOSE_CODE TYPE STRING,
ID TYPE STRING,
CAS_NUMBER TYPE STRING,
CLASSIFICATION_GHS TYPE STRING,
CLASSIFICATION_EU TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EHFNDS_CHM_SEARCH_CRITERIA_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_EHFNDS_CHM_SEARCH_CRITERIA_STR-KEY sy-vline 
WA_EHFNDS_CHM_SEARCH_CRITERIA_STR-NAME sy-vline 
WA_EHFNDS_CHM_SEARCH_CRITERIA_STR-TRADE_NAME sy-vline 
WA_EHFNDS_CHM_SEARCH_CRITERIA_STR-COMPANY_INT_NAME sy-vline 
WA_EHFNDS_CHM_SEARCH_CRITERIA_STR-VENDOR_KEY_REF sy-vline 
WA_EHFNDS_CHM_SEARCH_CRITERIA_STR-STATUS_REV sy-vline 
WA_EHFNDS_CHM_SEARCH_CRITERIA_STR-IS_SDS_RECORD sy-vline 
WA_EHFNDS_CHM_SEARCH_CRITERIA_STR-CHM_NATURE sy-vline 
WA_EHFNDS_CHM_SEARCH_CRITERIA_STR-HAZ_INGR_KEY_REF sy-vline 
WA_EHFNDS_CHM_SEARCH_CRITERIA_STR-MATERIAL_ID sy-vline 
WA_EHFNDS_CHM_SEARCH_CRITERIA_STR-METH_USE_CODE sy-vline 
WA_EHFNDS_CHM_SEARCH_CRITERIA_STR-APPR_LOC_KEY_REF sy-vline 
WA_EHFNDS_CHM_SEARCH_CRITERIA_STR-CHEMICAL_ROLE sy-vline 
WA_EHFNDS_CHM_SEARCH_CRITERIA_STR-PURPOSE_CODE sy-vline 
WA_EHFNDS_CHM_SEARCH_CRITERIA_STR-ID sy-vline 
WA_EHFNDS_CHM_SEARCH_CRITERIA_STR-CAS_NUMBER sy-vline 
WA_EHFNDS_CHM_SEARCH_CRITERIA_STR-CLASSIFICATION_GHS sy-vline 
WA_EHFNDS_CHM_SEARCH_CRITERIA_STR-CLASSIFICATION_EU sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.